Cincinnati’s #1 Flat Roofing Contractor

Flat Roof's, more commonly refered to as low-slope roofs, come in a variety of system types. Low-slope roofs are available in 1) Metal, 2) Built-Up (BUR), 3) Modified Bitumen (MB), 4) Single Ply (PVC or Rubber) and 5) Sprayed Polyeurothane Foam. Each system type has it's place. The decision on which system to use should be based more on the use of the building, and not primarily on initial cost. Above all, routine maintence is important to ensure the longevity of your flat roofing system. Contact Us today to sign up for our Maintence Program.

Q. What is the best flat roof? 

A. There are many types of roof systems, and installed properly, all can work well.  We like to use “modified” roof systems (excluding torch / APD) when budget and durability are required.  EPDM (rubber) roofs do well in large, low traffic roofs or small roofs that can be done with little or no seaming.

Q: How much do flat roofs cost?

A. There are a few factors that effect the cost of flat roofing. 

  • Full removal and replacement of re-roof go over.
  • The amount of penetrations and walls.
  • Years of warranty / life expectancy

Q. Why do flat roofs always leak?

A. We have found that almost all leaks are from improperly installed or missing penetration and wall flashings.  Lee Sheet Metal & Roofing has the experience and integrity to make sure no stone goes unturned. Knowing how your roof is being is being finished is more important than the roof itself.

Q. Is it bad if water sits on my roof after it rains?

A. Yes, this is a problem.  The definition of standing water by roof industry standard is: 48 to 72 hours in moderate weather conditions.  If water is still present after a day or two, this will permanently destroy your roof in these areas and void any manufacturers warranty. Sometimes drain can be added at poor drainage locations or tapered insulation’s can be added to move water to the drain location.

Q. Is there anything I need to do to maintain my roof warranty?

A. Yes, most manufacturers will require you to “prove” that you have proficiently cleaned and maintained roof bi-annually, and you must report any problems to the manufacturer within 60 days.  Failure to do so gives the manufacturer an easy out for honoring a warranty issue. Contact Us to join our Maintence Program. 

Q. Why do roofs collapse under snow load?

A. We have found that the engineering of a modern flat roofing structure is usually done correctly to handle snow load.  Failures generally happen when certain conditions are present.

  • Years of water damage, thus compromising the structure of the building.
  • Additions to a structure that create “traps” or “high walls” where huge loads of drifting snow can accumulate.
  • Clogged or frozen roof drains of scuppers.
  • Modifications to the interior of the building made with no concern for structural impact on the roof.



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